Organized the project files.

And also fixed some bugs.

PriFileFormat/UnknownSection.cs

@@ -0,0 +1,23 @@
+using System.IO;
+using System.Runtime.InteropServices;
+namespace PriFileFormat
+{
+	public class UnknownSection: Section
+	{
+		public byte [] SectionContent { get; private set; }
+		internal UnknownSection (string sectionIdentifier, PriFile priFile) : base (sectionIdentifier, priFile) {}
+		protected override bool ParseSectionContent (BinaryReader binaryReader)
+		{
+			int contentLength = (int)(binaryReader.BaseStream.Length - binaryReader.BaseStream.Position);
+
+			SectionContent = binaryReader.ReadBytes (contentLength);
+
+			return true;
+		}
+		public void ClearContent ()
+		{
+			SectionContent = null;
+		}
+		~UnknownSection () { ClearContent (); }
+	}
+}